HPMC: polymer na-agbanwe agbanwe maka ngwa ụlọ

Hydroxypropylmethylcellulose (HPMC) bụ polymer soluble mmiri nke ewepụtara na cellulose. Ọ bụ ihe na-acha ọcha na-acha ọcha na-acha ọcha na-eji ngwa dị iche iche gụnyere ihe owuwu, ọgwụ, nri, ngwaahịa nlekọta onwe onye na akwa akwa. N'ime ihe owuwu, a na-eji HPMC eme ihe dị ka ihe nkpuchi, ihe nkedo, emulsifier na onye na-ejigide mmiri. Ọ bụ akụkụ dị mkpa nke ngwaahịa simenti na-ejikarị na ngwa agha, plasta, plasta na nrapado tile.

Njirimara chemical nke HPMC

HPMC bụ polymer kpụrụ site na mmeghachi omume nke cellulose na propylene oxide na methyl chloride. Usoro njikọ ahụ gụnyere iji dochie otu hydroxyl na cellulose na otu methyl na hydroxypropyl. Ngbanwe a na-eme ka e guzobe polymers na-edozi mmiri na nonionic nke kwụsiri ike n'ọtụtụ ọnọdụ pH. Enwere ike ịhazi usoro kemịkalụ nke HPMC site n'ịgbanwe ogo nke nnọchi, nnọchi molar na ọkwa viscosity. Mgbanwe ndị a nwere ike ịkwalite arụmọrụ nke HPMC na ngwa dị iche iche, gụnyere ihe owuwu.

Njirimara anụ ahụ nke HPMC

Njirimara anụ ahụ nke HPMC na-adabere n'ogo ngbanwe, ngbanwe molar na ọkwa viscosity. HPMC bụ ntụ ntụ na-acha ọcha ma na-acha ọcha, enweghị isi na enweghị ụtọ. Ọ bụ soluble na mmiri na-etolite a doro anya, transperent viscous ngwọta. Enwere ike imezi viscosity nke ngwọta HPMC site n'ịgbanwe ntinye nke polymer, pH nke ngwọta, na okpomọkụ. Ihe ngwọta HPMC kwụsiri ike n'elu oke okpomọkụ ma anaghị etolite gel ma ọ bụ na-ebuli na jụrụ oyi.

Ọrụ HPMC na-ewu

A na-eji HPMC na-ewu ihe dịka ihe ngbanwe rheology, onye na-ejigide mmiri na nrapado. Rheology modifiers bụ ihe nwere ike ịgbanwe omume eruba nke ihe, dị ka ngwa agha ma ọ bụ plasta. HPMC nwere ike ịbawanye viscosity nke ngwa agha ma ọ bụ plasta na-enweghị emetụta ọrụ ya ma ọ bụ ịtọ oge. Nke a na-enye ihe nkwụsi ike ka ukwuu ma belata ihe ize ndụ nke ịda mbà n'obi ma ọ bụ daa n'oge ngwa.

Ihe na-ejigide mmiri bụ ihe ndị nwere ike ime ka ihe ndị na-eme ka mmiri dịkwuo elu. HPMC na-ejigide mmiri na ngwaahịa simenti dị ka ngwa agha na plasta ogologo oge karịa mgbakwunye ndị ọzọ. Ngwongwo a na-enyere aka igbochi ihe na-eme ka ọ ghara ikpochapụ ngwa ngwa, nke nwere ike ime ka ọkpụkpụ na nkwụsị nke ike.

Ihe nchikota bụ ihe nwere ike melite nrapado nke ihe na mkpụrụ. HPMC nwere ike imeziwanye ike njikọ nke nrapado taịlị site n'ịmepụta ihe nkiri dị mkpa n'etiti nrapado na mkpụrụ. Ihe nkiri a na-eme ka ike wetting nke nrapado na-enye ya ohere ịmepụta njikọ siri ike na mkpụrụ.

Uru nke HPMC na-ewu

Enwere ọtụtụ uru iji HPMC na-ewu:

1. Ịrụ ọrụ nke ọma: HPMC nwere ike imeziwanye ọrụ nke ngwa agha na stuccoes site n'ịbawanye nkwụsi ike ha na ibelata ihe ize ndụ nke ikewapụ.

2. Ehance cohesion: HPMC nwere ike imeziwanye njikọ nke ngwaahịa ndị sitere na ciment site n'ịbawanye viscosity na njide mmiri.

3. Mma bonding ike: HPMC nwere ike melite bonding ike nke tile adhesives site akpụ a mkpa film n'etiti nrapado na mkpụrụ.

4. Mmiri na-eguzogide mmiri: HPMC nwere ike imeziwanye nkwụsị mmiri nke ngwaahịa ciment dị ka adhesives tile site na imezi njide mmiri na ibelata porosity nke ngwaahịa ciment.

5. Nguzogide kemịkalụ: HPMC nwere ike ịkwalite nguzogide kemịkalụ nke ngwaahịa ndị sitere na ciment site na imezi njigide mmiri nke ngwaahịa ndị sitere na ciment na ibelata mmeghachi omume ha.

Na ngwụcha

HPMC bụ polymer multifunctional nke a na-ejikarị eme ihe dị ka rheology modifier, onye na-ejigide mmiri na nrapado na-ewu. Ngwongwo ya pụrụ iche na-eme ka ọ bụrụ ihe dị mkpa na ngwaahịa cimenti dị ka ngwa agha, plasta, plasta na nrapado tile. Iji HPMC na-ewu nwere ike imeziwanye arụmọrụ, njikọta, ike nkekọ, nguzogide mmiri na nguzogide kemịkalụ nke ngwaahịa ndị a. Dị ka a na-eduga HPMC emeputa, anyị na-enye a dịgasị iche iche nke HPMC akara ule izute kpọmkwem mkpa nke anyị ahịa. Kpọtụrụ anyị ka ịmatakwu maka ngwaahịa na ọrụ anyị.